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HTML
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<title>Getting Started | React</title>
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React
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<a href="/react/docs/test-utils.html">Test Utilities</a>
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<a href="/react/docs/clone-with-props.html">Cloning Elements</a>
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<a href="/react/docs/advanced-performance.html">Advanced Performance</a>
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<a href="/react/docs/context.html">Context</a>
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<h3>Reference</h3>
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<ul>
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<li>
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<a href="/react/docs/top-level-api.html">Top-Level API</a>
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<a href="/react/docs/component-api.html">Component API</a>
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<a href="/react/docs/component-specs.html">Component Specs and Lifecycle</a>
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<a href="/react/docs/tags-and-attributes.html">Supported Tags and Attributes</a>
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<a href="/react/docs/events.html">Event System</a>
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<a href="/react/docs/dom-differences.html">DOM Differences</a>
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<li>
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<a href="/react/docs/special-non-dom-attributes.html">Special Non-DOM Attributes</a>
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</li>
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<li>
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<a href="/react/docs/reconciliation.html">Reconciliation</a>
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<li>
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<a href="/react/docs/webcomponents.html">Web Components</a>
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<li>
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<a href="/react/docs/glossary.html">React (Virtual) DOM Terminology</a>
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</li>
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</ul>
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</div>
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<!-- Tips Nav -->
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<div class="nav-docs-section">
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<h3>Tips</h3>
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<ul>
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<li>
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<a href="/react/tips/introduction.html">Introduction</a>
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</li>
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<li>
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<a href="/react/tips/inline-styles.html">Inline Styles</a>
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</li>
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<li>
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<a href="/react/tips/if-else-in-JSX.html">If-Else in JSX</a>
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</li>
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<li>
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<a href="/react/tips/self-closing-tag.html">Self-Closing Tag</a>
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</li>
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<li>
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<a href="/react/tips/maximum-number-of-jsx-root-nodes.html">Maximum Number of JSX Root Nodes</a>
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</li>
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<li>
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<a href="/react/tips/style-props-value-px.html">Shorthand for Specifying Pixel Values in style props</a>
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</li>
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<li>
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<a href="/react/tips/children-props-type.html">Type of the Children props</a>
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</li>
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<li>
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<a href="/react/tips/controlled-input-null-value.html">Value of null for Controlled Input</a>
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</li>
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<li>
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<a href="/react/tips/componentWillReceiveProps-not-triggered-after-mounting.html">componentWillReceiveProps Not Triggered After Mounting</a>
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</li>
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<li>
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<a href="/react/tips/props-in-getInitialState-as-anti-pattern.html">Props in getInitialState Is an Anti-Pattern</a>
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</li>
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<li>
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<a href="/react/tips/dom-event-listeners.html">DOM Event Listeners in a Component</a>
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</li>
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<li>
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<a href="/react/tips/initial-ajax.html">Load Initial Data via AJAX</a>
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</li>
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<li>
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<a href="/react/tips/false-in-jsx.html">False in JSX</a>
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</li>
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<li>
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<a href="/react/tips/communicate-between-components.html">Communicate Between Components</a>
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</li>
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<li>
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<a href="/react/tips/expose-component-functions.html">Expose Component Functions</a>
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</li>
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<li>
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<a href="/react/tips/children-undefined.html">this.props.children undefined</a>
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</li>
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<li>
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<a href="/react/tips/use-react-with-other-libraries.html">Use React with Other Libraries</a>
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</li>
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<li>
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<a href="/react/tips/dangerously-set-inner-html.html">Dangerously Set innerHTML</a>
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</li>
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</ul>
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</div>
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<!-- Contributing Nav -->
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<div class="nav-docs-section">
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<h3>Contributing</h3>
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<ul>
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<li>
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<a href="/react/contributing/design-principles.html">Design Principles</a>
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</li>
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</ul>
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</div>
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</div>
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<div class="inner-content">
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<a class="edit-page-link" href="https://github.com/facebook/react/tree/master/docs/docs/getting-started.md" target="_blank">Edit on GitHub</a>
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<h1>
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Getting Started
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</h1>
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<div class="subHeader"></div>
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<h2><a class="anchor" name="jsfiddle"></a>JSFiddle <a class="hash-link" href="#jsfiddle">#</a></h2>
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<p>The easiest way to start hacking on React is using the following JSFiddle Hello World examples:</p>
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<ul>
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<li><strong><a href="https://jsfiddle.net/reactjs/69z2wepo/">React JSFiddle</a></strong></li>
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<li><a href="https://jsfiddle.net/reactjs/5vjqabv3/">React JSFiddle without JSX</a></li>
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</ul>
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<h2><a class="anchor" name="create-react-app"></a>Create React App <a class="hash-link" href="#create-react-app">#</a></h2>
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<p><strong><a href="http://github.com/facebookincubator/create-react-app">Create React App</a></strong> is a new officially supported way to create single-page React applications. It offers a modern build setup with no configuration. It requires Node 4 or higher.</p>
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<p>Note that it has <a href="https://github.com/facebookincubator/create-react-app#limitations">some limitations</a> and is only useful for single-page applications. If you need more flexibility, or if you want to integrate React into an existing project, consider other options below.</p>
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<h2><a class="anchor" name="starter-pack"></a>Starter Pack <a class="hash-link" href="#starter-pack">#</a></h2>
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<p>If you're just getting started, you can download the starter kit. The starter kit includes prebuilt copies of React and React DOM for the browser, as well as a collection of usage examples to help you get started.</p>
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<div class="buttons-unit downloads">
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<a href="/react/downloads/react-15.3.1.zip" class="button">
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Download Starter Kit 15.3.1
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</a>
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</div>
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<p>In the root directory of the starter kit, create a <code>helloworld.html</code> with the following contents.</p>
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<div class="highlight"><pre><code class="language-html" data-lang="html"><span class="cp"><!DOCTYPE html></span>
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<span class="nt"><html></span>
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<span class="nt"><head></span>
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<span class="nt"><meta</span> <span class="na">charset=</span><span class="s">"UTF-8"</span> <span class="nt">/></span>
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<span class="nt"><title></span>Hello React!<span class="nt"></title></span>
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<span class="nt"><script </span><span class="na">src=</span><span class="s">"build/react.js"</span><span class="nt">></script></span>
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<span class="nt"><script </span><span class="na">src=</span><span class="s">"build/react-dom.js"</span><span class="nt">></script></span>
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<span class="nt"><script </span><span class="na">src=</span><span class="s">"https://npmcdn.com/babel-core@5.8.38/browser.min.js"</span><span class="nt">></script></span>
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<span class="nt"></head></span>
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<span class="nt"><body></span>
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<span class="nt"><div</span> <span class="na">id=</span><span class="s">"example"</span><span class="nt">></div></span>
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<span class="nt"><script </span><span class="na">type=</span><span class="s">"text/babel"</span><span class="nt">></span>
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<span class="nx">ReactDOM</span><span class="p">.</span><span class="nx">render</span><span class="p">(</span>
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<span class="o"><</span><span class="nx">h1</span><span class="o">></span><span class="nx">Hello</span><span class="p">,</span> <span class="nx">world</span><span class="o">!<</span><span class="err">/h1>,</span>
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<span class="nb">document</span><span class="p">.</span><span class="nx">getElementById</span><span class="p">(</span><span class="s1">'example'</span><span class="p">)</span>
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<span class="p">);</span>
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<span class="nt"></script></span>
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<span class="nt"></body></span>
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<span class="nt"></html></span>
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</code></pre></div>
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<p>The XML syntax inside of JavaScript is called JSX; check out the <a href="/react/docs/jsx-in-depth.html">JSX syntax</a> to learn more about it. In order to translate it to vanilla JavaScript we use <code><script type="text/babel"></code> and include Babel to actually perform the transformation in the browser. Open the html from a browser and you should already be able to see the greeting!</p>
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<h3><a class="anchor" name="separate-file"></a>Separate File <a class="hash-link" href="#separate-file">#</a></h3>
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<p>Your React JSX code can live in a separate file. Create the following <code>src/helloworld.js</code>.</p>
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<div class="highlight"><pre><code class="language-javascript" data-lang="javascript"><span class="nx">ReactDOM</span><span class="p">.</span><span class="nx">render</span><span class="p">(</span>
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<span class="o"><</span><span class="nx">h1</span><span class="o">></span><span class="nx">Hello</span><span class="p">,</span> <span class="nx">world</span><span class="o">!<</span><span class="err">/h1>,</span>
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<span class="nb">document</span><span class="p">.</span><span class="nx">getElementById</span><span class="p">(</span><span class="s1">'example'</span><span class="p">)</span>
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<span class="p">);</span>
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</code></pre></div>
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<p>Then reference it from <code>helloworld.html</code>:</p>
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<div class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt"><script </span><span class="na">type=</span><span class="s">"text/babel"</span> <span class="na">src=</span><span class="s">"src/helloworld.js"</span><span class="nt">></script></span>
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</code></pre></div>
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<p>Note that some browsers (Chrome, e.g.) will fail to load the file unless it's served via HTTP.</p>
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<h2><a class="anchor" name="using-react-with-npm-or-bower"></a>Using React with npm or Bower <a class="hash-link" href="#using-react-with-npm-or-bower">#</a></h2>
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<p>You can also use React with package managers like npm or Bower. You can learn more in our <a href="/react/docs/package-management.html">Package Managers</a> section.</p>
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<h2><a class="anchor" name="next-steps"></a>Next Steps <a class="hash-link" href="#next-steps">#</a></h2>
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<p>Check out <a href="/react/docs/tutorial.html">the tutorial</a> and the other examples in the starter kit's <code>examples</code> directory to learn more.</p>
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<p>Good luck, and welcome!</p>
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© 2013–2016 Facebook Inc.<br>
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